摘要
本文为研究明火燃烧后钢筋混凝土梁的残余抗剪强度，共进行了８根梁的试验研究。梁三面星火，温度最高达７００℃。根据热传导原理推导了温度影响系数，并结合斜截面平衡方程的一个混凝土强度原则，建立了无腹筋梁与有腹筋梁经火烧高温作用后的残余抗剪承载力的计算公式．
method to Dredict the residual shear strength of reinforced concrete thems subjected to fire is presented.For this reason,the tests on eight reinforced concrete hams after exposure to temperature of up to 700℃ along three faces are described.According to the theory of heat transfer an influence coefficient about temperatUre has ben derived.By wig this coefficient and the equations of equilibrium of forces in the disgonal section and a Strength criterion for concrete the formulas Computing the residual shear-carrying ability for reinforced concrete thems after elevated temperature are proposed.
关键词
高温
钢筋混凝土
梁
抗剪强度
温度
elevated temperature reinforced concrete beam
Shear strenght
